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经营范围
发明名称
Tube tapering device
摘要
申请公布号
US3363442(A)
申请公布日期
1968.01.16
申请号
US19650458553
申请日期
1965.05.25
申请人
NORTH AMERICAN AVIATION, INC.
发明人
KENNEDY CLIFFORD F.;SHELTON THOMAS M.
分类号
B21B19/16;B21C37/18;B21D41/04;F16L55/04;F16L55/054
主分类号
B21B19/16
代理机构
代理人
主权项
地址
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